Browsing: The Tech

Like cayenne pepper on a mushroom risotto, boost pressure is the seasoning in a serving of turbocharged performance. Too little boost hampers performance and produces a bland dish, while too much boost, like too much seasoning, kills your engine and puts you back in the kitchen to start all over. As many owners of turbo vehicles have discovered, the most important component control system on a turbocharged engine is the boost control system; optimization of the engine’s boost control system delivers peak performance and reliability. Ideally, boost response is maximized while power output is optimized, while at the same time,…

THE NUMBERS GAME When we arrange all of the tested camshafts by the actual measured intake duration at 1mm, an interesting trend is revealed. The trend is that every manufacturer has a different method of computing its”advertised” duration of the camshaft. As a result, not all camshafts advertised as “264” camshafts have the same amount of actual duration. In fact, one company’s “264” camshaft may have more duration than another company’s “272” camshaft. This is the case with the Kelford 264 that actually features more duration than either the HKS 272 or Comp Cams 272+. The opposite is found with…

MANUFACTURER: TOMEI POWERED ENGINE MODEL: 4G63 EVO 8 CAMSHAFT PN# (INTAKE): 1454290115 CAMSHAFT PN# (EXHAUST):1455290115 SPEC CARD# : GSC-6008S3 INTAKE EXHAUST CAM TIMING EVENTS Centerline 110° 115° Valve Opening @ 1.0mm 6.1° BTDC 59.7° BBDC Valve Opening @ 0.050″ 2.53° BTDC 56.1° BBDC Valve Closing @ 1.0mm 55.8° ABDC 0.7° ATDC Valve Closing @ 0.050″ 51.8° ABDC 2.9° BTDC DURATION Actual Duration @ 1.0mm 241.9° 240.5° Actual Duration @ 0.050″ 234.3° 233.2° Claimed Duration @ 1.0mm 242.0° 241.5° PEAK LIFT Peak Valve Lift 11.5mm (0.455″) 11.5mm (0.452″) Peak Cam Lift 6.7mm (0.263″) 6.6mm (0.261″) Manufacturer’s Pitch TOMEI has released a wide range of…

MANUFACTURER: GSC Power Division ENGINE MODEL: 4G63 EVO 8 CAMSHAFT PN#: GSC-6008S3 SPEC CARD#: N/A INTAKE EXHAUST CAM TIMING EVENTS Centerline 109° 115° Valve Opening @ 1.0mm 3.8° BTDC 53.8° BBDC Valve Opening @ 0.050″ 0.4° BTDC 50.2° BBDC Valve Closing @ 1.0mm 51.5° ABDC 4.8° BTDC Valve Closing @ 0.050″ 47.5° ABDC 8.1° BTDC DURATION Actual Duration @ 1.0mm 235.3° 229.0° Actual Duration @ 0.050″ 227.8° 222.1° Claimed Duration @ 1.0mm 238.0° 238.0° PEAK LIFT Peak Valve Lift 11.7mm (0.460″) 11.5mm (0.451″) Peak Cam Lift 6.8mm (0.266″) 6.6mm (0.261″) Manufacturer’s Pitch The S3 Cams are available in a solid lifter cam and…

MANUFACTURER: Kelford Cams ENGINE MODEL: 4G63 EVO 8 CAMSHAFT PN#: 8-TX280 SPEC CARD#: 133933 INTAKE EXHAUST CAM TIMING EVENTS Centerline 107° 113° Valve Opening @ 1.0mm 1.8° BTDC 47.6° BBDC Valve Opening @ 0.050″ 1.7° ATDC 43.9° BBDC Valve Closing @ 1.0mm 41.4° ABDC 4.4° BTDC Valve Closing @ 0.050″ 37.6° ABDC 7.9° BTDC DURATION Actual Duration @ 1.0mm 222.9° 223.2° Actual Duration @ 0.050″ 215.8° 216.0° Claimed Duration @ 1.0mm 226.0° 226.0° PEAK LIFT Peak Valve Lift 11.1mm (0.436″) 11.1mm (0.436″) Peak Cam Lift 6.4mm (0.252″) 6.4mm (0.252″) Manufacturer’s Pitch 280/276 Duration, 11.50/11.00mm Lift. High HP racing cams, suits well built racing…

MANUFACTURER: GSC Power Division ENGINE MODEL: 4G63 EVO 8 CAMSHAFT PN#: GSC-6008R2 SPEC CARD#: N/A INTAKE EXHAUST CAM TIMING EVENTS Centerline 109° 115° Valve Opening @ 1.0mm 2.46° ATDC 56.94° BBDC Valve Opening @ 0.050″ 0.97° ATDC 52.96° BBDC Valve Closing @ 1.0mm 50.19° ABDC 4.38° BTDC Valve Closing @ 0.050″ 46.17° ABDC 7.88° BTDC DURATION Actual Duration @ 1.0mm 232.7° 232.6° Actual Duration @ 0.050″ 225.2° 225.1° Claimed Duration @ 1.0mm 236.0° 236.0° PEAK LIFT Peak Valve Lift 12.1mm (0.475″) 12.0mm (0.474″) Peak Cam Lift 7.0mm (0.275″) 7.0mm (0.274″) Manufacturer’s Pitch The 6008R2 is a high lift, very aggressive profile with a…

MANUFACTURER: TOMEI POWERED ENGINE MODEL: 4G63 EVO 8 CAMSHAFT PN# (INTAKE): 1453280115 CAMSHAFT PN# (EXHAUST):1455280115 SPEC CARD# : GSC-6008S3 INTAKE EXHAUST CAM TIMING EVENTS Centerline 110° 115° Valve Opening @ 1.0mm 1.0° ATDC 56.4° BBDC Valve Opening @ 0.050″ 2.5° ATDC 52.6° BBDC Valve Closing @ 1.0mm 51.4° ABDC 4.0° BTDC Valve Closing @ 0.050″ 47.5° ABDC 7.6° BTDC DURATION Actual Duration @ 1.0mm 232.4° 232.4° Actual Duration @ 0.050″ 225.0° 225.1° Claimed Duration @ 1.0mm 233.5° 232.5° PEAK LIFT Peak Valve Lift 11.5mm (0.454″) 11.5mm (0.451″) Peak Cam Lift 6.7mm (0.263″) 6.6mm (0.261″) Manufacturer’s Pitch TOMEI has released a wide range of…

MANUFACTURER: JUN ENGINE MODEL: 4G63 EVO 8 CAMSHAFT PN# (INTAKE): 1004M-M012 CAMSHAFT PN# (EXHAUST): 1004M-M142 SPEC CARD# : N/A INTAKE EXHAUST CAM TIMING EVENTS Centerline 110° 110° Valve Opening @ 1.0mm 7.3° ATDC 38.9° BBDC Valve Opening @ 0.050″ 10.6° ATDC 35.6° BBDC Valve Closing @ 1.0mm 39.4° ABDC 7.3° BTDC Valve Closing @ 0.050″ 35.8° ABDC 10.9° BTDC DURATION Actual Duration @ 1.0mm 212.1° 211.6° Actual Duration @ 0.050″ 205.1° 204.7° Claimed Duration @ 1.0mm 214.0° 214.0° PEAK LIFT Peak Valve Lift 10.8mm (0.425″) 10.2mm (0.401″) Peak Cam Lift 6.2mm (0.245″) 5.9mm (0.232″) Manufacturer’s Pitch When developing a high lift camshaft at…

MANUFACTURER: Buschur Racing ENGINE MODEL: 4G63 EVO 8 CAMSHAFT PN# (INTAKE): BF272 SPEC CARD# (INTAKE): N/A INTAKE EXHAUST CAM TIMING EVENTS Centerline N/A N/A Valve Opening @ 1.0mm 0.2° ATDC 52.2° BBDC Valve Opening @ 0.050″ 3.3° ATDC 48.5° BBDC Valve Closing @ 1.0mm 46.3° ABDC 4.8° BTDC Valve Closing @ 0.050″ 42.8° ABDC 8.3° BTDC DURATION Actual Duration @ 1.0mm 226.6° 214.5° Actual Duration @ 0.050″ 227.5° 220.2° Claimed Duration @ 1.0mm N/A N/A PEAK LIFT Peak Valve Lift 11.2mm (0.442″) 11.3mm (0.443″) Peak Cam Lift 6.5mm (0.256″) 6.5mm (0.256″) Manufacturer’s Pitch The ultimate in EVO camshafts. This new custom grind from…

MANUFACTURER: TOMEI POWERED ENGINE MODEL: 4G63 EVO 8 CAMSHAFT PN# (INTAKE): 1454270115 CAMSHAFT PN# (EXHAUST):1455270115 SPEC CARD# : N/A INTAKE EXHAUST CAM TIMING EVENTS Centerline 110° 115° Valve Opening @ 1.0mm 2.6° ATDC 52.2° BBDC Valve Opening @ 0.050″ 6.0° ATDC 48.5° BBDC Valve Closing @ 1.0mm 47.6° ABDC 7.5° BTDC Valve Closing @ 0.050″ 43.6° ABDC 11.0° BTDC DURATION Actual Duration @ 1.0mm 225.0° 224.8° Actual Duration @ 0.050″ 217.7° 217.5° Claimed Duration @ 1.0mm 242.0° 241.50° PEAK LIFT Peak Valve Lift 11.5mm (0.454″) 11.5mm (0.452″) Peak Cam Lift 6.7mm (0.263″) 6.6mm (0.261″) Manufacturer’s Pitch TOMEI has released a wide range of…

MANUFACTURER: Kelford Cams ENGINE MODEL: 4G63 EVO 8 CAMSHAFT PN#: 8-TX272 SPEC CARD#: 133942 INTAKE EXHAUST CAM TIMING EVENTS Centerline 107° 113° Valve Opening @ 1.0mm 1.8° BTDC 47.6° BBDC Valve Opening @ 0.050″ 1.7° ATDC 43.9° BBDC Valve Closing @ 1.0mm 41.4° ABDC 4.4° BTDC Valve Closing @ 0.050″ 37.6° ABDC 7.9° BTDC DURATION Actual Duration @ 1.0mm 222.9° 223.2° Actual Duration @ 0.050″ 215.8° 216.0° Claimed Duration @ 1.0mm 226.0° 226.0° PEAK LIFT Peak Valve Lift 11.1mm (0.436″) 11.1mm (0.436″) Peak Cam Lift 6.4mm (0.252″) 6.4mm (0.252″) Manufacturer’s Pitch 272 Duration 11.00mm Lift. The best all round performance cam to suit…

MANUFACTURER: GSC Power Division ENGINE MODEL: 4G63 EVO 8 CAMSHAFT PN#: GSC-6008S2 SPEC CARD#: N/A INTAKE EXHAUST CAM TIMING EVENTS Centerline 107° 113° Valve Opening @ 1.0mm 3.1° ATDC 45.7° BBDC Valve Opening @ 0.050″ 0.6° ATDC 42.3° BBDC Valve Closing @ 1.0mm 39.3° ABDC 3.8° BTDC Valve Closing @ 0.050″ 35.7° ABDC 7.6° BTDC DURATION Actual Duration @ 1.0mm 222.4° 222.0° Actual Duration @ 0.050″ 215.1° 214.7° Claimed Duration @ 1.0mm 230.0° 230.0° PEAK LIFT Peak Valve Lift 11.1mm (0.435″) 11.0mm (0.435″) Peak Cam Lift 6.4mm (0.252″) 6.4mm (0.251″) Manufacturer’s Pitch The S2 cams are designed for those with more power in…

MANUFACTURER: Comp Cams ENGINE MODEL: 4G63 EVO 8 CAMSHAFT PN# (INTAKE): 119-301-8I CAMSHAFT PN# (EXHAUST): 119-302-8E SPEC CARD# (INTAKE): WA8489-13 SPEC CARD# (EXHAUST): UX3544-07 INTAKE EXHAUST CAM TIMING EVENTS Centerline 104° 112° Valve Opening @ 1.0mm 0.8° ATDC 46.4° BBDC Valve Opening @ 0.050″ 2.6° ATDC 43.0° BBDC Valve Closing @ 1.0mm 46.4° ABDC 5.7° BTDC Valve Closing @ 0.050″ 43.0° ABDC 9.2° BTDC DURATION Actual Duration @ 1.0mm 221.0° 220.6° Actual Duration @ 0.050″ 214.2° 213.8° Claimed Duration @ 1.0mm 218.0° 218.0° PEAK LIFT Peak Valve Lift 11.2mm (0.442″) 10.5mm (0.414″) Peak Cam Lift 6.5mm (0.255″) 6.1mm (0.239″) Manufacturer’s Pitch 280+, Excellent…

MANUFACTURER: Cosworth Engineering ENGINE MODEL: 4G63 EVO 8 CAMSHAFT PN#: KK3805 SPEC CARD#: N/A INTAKE EXHAUST CAM TIMING EVENTS Centerline 107° 113° Valve Opening @ 1.0mm 4.7° ATDC 49.2° BBDC Valve Opening @ 0.050″ 8.3° ATDC 45.3° BBDC Valve Closing @ 1.0mm 38.7° ABDC 8.7° BTDC Valve Closing @ 0.050″ 34.7° ABDC 12.9° BTDC DURATION Actual Duration @ 1.0mm 214.0° 220.5° Actual Duration @ 0.050″ 206.4° 212.4° Claimed Duration @ 1.0mm 214.5° 213.5° PEAK LIFT Peak Valve Lift 11.1mm (0.436″) 10.3mm (0.404″) Peak Cam Lift 6.5mm (0.252″) 5.9mm (0.233″) Manufacturer’s Pitch Cosworth has been engineering camshafts for nearly 50 years. That coupled with…

MANUFACTURER: Kelford Cams ENGINE MODEL: 4G63 EVO 8 CAMSHAFT PN#: 8-TX264 SPEC CARD#: 133984 INTAKE EXHAUST CAM TIMING EVENTS Centerline 104° 112° Valve Opening @ 1.0mm 1.8° ATDC 42.0° BBDC Valve Opening @ 0.050″ 5.1° ATDC 38.7° BBDC Valve Closing @ 1.0mm 34.6° ABDC 9.9° BTDC Valve Closing @ 0.050″ 31.1° ABDC 13.3° BTDC DURATION Actual Duration @ 1.0mm 212.8° 212.1° Actual Duration @ 0.050″ 206.0° 205.3° Claimed Duration @ 1.0mm 210.0° 210.0° PEAK LIFT Peak Valve Lift 11.2mm (0.441″) 10.5mm (0.413″) Peak Cam Lift 6.5mm (0.255″) 6.1mm (0.239″) Manufacturer’s Pitch 264/260 Duration, 11.00/10.35mm Lift. The ultimate cam for street, strip and track…

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